Furnace adapted for burning oil and other projectable fuels



April 28, 1925. 1,535,332

. N. H. MORRIS FURNACE ADAPTED FOR BURNING OIL AND OTHER ERQJEGTABLEFUELS Filed April 21, 1 4 3 Sheets Sheec, 1

' April 28, 1925. 1,535,332

N. H. MORRIS FURNACE ADAPTED FOR BURNING OIL AND OTHER PROJECTABLE FUELSFiled A ril 21, 1924 3 SheetsShe'ec 2 April 28, 1925. 1,535,332

N. H. MORRIS FURNACE ADAP'I'ED FOR BURNING OIL AND OTHER PROJECTABLEFUELS Filed April 21, 1924 3 ShGGtS -SI'IGGTI 5 Patented Apr. 28, 1925.

UNITED srerres- NORMAN HUSON MORRIS, OF LONDON, ENGLAND.

FURNACE ADAPTED FO R BURNING OIL AND OTHERIROJECTABLE FUELS.

Application filed April 21, 1924. Serial No. 707,944.

To all whom it may concern:

Be it known that I, NORMAN HUSON MORRIS, a subject of the King of GreatBritain, residing at London, England, have invented certain new anduseful Improvements in and Connected with Furnaces Adapted for BurningOil and Other Projectable Fuels, of which the following is aspecification.

This invention comprises improvementsin and connected with furnaces,particularly steam boiler furnaces, adapted for burning oil and otherprojectable fuels.

An important object of the invention is to provide a simple andfool-proof control for the different units so as to secure efiicientworking and long running periods uninterrupted by intervals for repairs.This is accomplished by providing a mechanism in which the operation ofa single control handle effects simultaneously (a) a gradual turning onof the fuel to the burners, (b) a control of steam admission inaccordance with the fuel admission this steam being utilized forprojecting the fuel and (0) a control of the admission of air forsupporting combustion in accordance with the fuel admission, thiscontrol making it impossible to admit cold air to the fire box when theflame is shut off, thereby avoiding damage to the fire box and tubes.

A further object is to combine, with the unified control means forsimultaneously regulating a steam blast whereby operation ofsuch blastmay be had when the conditions demand it and the blast may be shut offwhen the conditions no longer require it.

This provision is of particular importancewhen applying the invention toa locomotive steam boiler furnace, as such auxiliary blast is requiredwhen the locomotive is standing or drifting with the fire low and withno emission of exhaust to create a draught.

Yet another object is' to adapt the unified control mechanism for use infurnaces comprising a plurality of burners, the said con trol beingoperative to regulate the admission of steam and fuel to the severalburners in a graduated manner whilst at the same time controlling theair admission and, if, desired, the admission of steam to the blastapparatus.

Finally, an object of this invention is to combine with a unifiedcontrol for a plurality of burners, a selective means whereby graduatedcontrol of such burners either simultaneously or in sequence may beobtained at will by a simple manipulation rcquiring no particularexercise of thought or skill on the part of the operator.

These and other objects are fully set forth and ascertained in thefollowing description and claims, the said description having referenceto drawings which illustrate examples of mechanisms embodying theseimprovements.

In the drawings Figure 1 is a more or less diagrammatic perspective viewof a triple burner installation for a locomotive fire box, the saidinstallation comprising control mechanism in accordance with theseimprovements.

Figure 2 is a sectional elevation to a larger scale of the steam valveseen in Figure 1.

Figure 3 is a plan section of the valve seen in Figure 2.

Figure'i is a developed plan view of the; ports of the valve seen inF1gures 2 and 3.

Figure 5 is a transverse section on the line VV of Figure 3.

Figure 6 is a transverse section on the line VIVI of Figure 3.

Figure 7 is a view similar to Figure 2 of a modified construction ofcylindrical steam valve adapted for giving selective control.

Figure 8 is a more or less diagrammatic elevation of a steam valve ofthe disc type adapted for giving selective control, a portionof thecover of the valve being broken away in order to display the ports.

Figure 9 is a perspective view of the valve seen in Figure 8.

Referring to Figure 1 of the drawings, a is the fire box of a locomotiveboiler 6 and c c 0 are liquid fuel burners which are supplied with fuelby the pipes d d d and with steam for projecting the fuel by pipes e 6 eThe admission of fuel to the pipes d d d is controlled by a valve in acasing f connected, as hereinafter explained, with a fuel supply. Theadmission of steam to the pipes e e e is controlled by a valve in acasing a connected by a pipe 72. with the boiler. The air for supportingcombustion is controlled by suitable valves or louvres 7' underoperative control of a rod 70 connected with a bell crank l, the latterbeing connected by a rod m with a crank it on the spindle of a skew gear0 in mesh with a pinion p on a control shaft As will be seen, the shaftg extends from the cab of the locomotive, where it is fitted with acontrol handle 1', to the back of the fire box where the fuel valvecasing f is situated, the said shaft 9 being fitted with a pinion ameshing with a pinion s on the fuel valve spindle and a pinion t formeshing with a pinion t on the steam valve spindle. u is a pipeextending from the steam valve casing g to a blower in the smoke box ofthe locomotive.

Re-fcrring now to Figure 2, the steam valve '1; is svlindrical, beingformed or fixed on a spindle *1)" on which the pinion t 15 fixed. Thisspindle o is provided with a worm o screwing in a nut part w fixed inthe end of the casing g, and is made steam tight by stuiiing box meansindicated generally by the reference 00. The cylindrical valve 1) ishollow as indicated by dotted lines, and is formed with a reduced endportion g having a solid end wall 2 adapted for closing the port of thesteam supply h. In the reduced portion 3/ there is formed a ring ofports 1 communicating with the hollow interior of the valve o, and inthe cylindrical wall of the valve 12 are formed three tapering ports 2,3, 4, these ports being seen also in Figure 4. The narrow leading endsof the tapering ports 2, 3, and 4, are not horizontally or axiallyaligned but a line touching the leading or narrow ends of the ports isat right angle to the axis of the cylindrical valve 1), putting the endof the port 2 in advance of the leading end of the port 3 and thelatter, in turn, in advance of the leading end of the port 4;. Thecylindrical wall of the valve '0 is also formed with a port 5 seen inFigure'2. The ports of the pipes e e e are in horizontal or axialalignment in the casing g and spaced and disposed so that the taperingports 2, 3 and 4 will come into register therewith in sequence upon theturning of the valve '0. The port 5 of the blower pipe w is disposed sothat the port 5 will move across it during the initial portion of theturning of the valve '0.

If the valve 1) be in its extreme left hand position, the solid end wallis hard against the port'of the steam admission pipe h and preventsadmission of steam. Upon appropriately turning the valve 1) by means ofthe handle 1 and gearing 25 t, the worm '0 working in the nut towithdraws the wall a from the steam admission port, and the turning ofthe valve '0 brings the narrow end of the port. 2 into register with theport of the pipe 6 as shown in dotted lines in Figure 2. Steam nowenters the annular space around the reduced end y, passes through theports 1 into the interior of the valve '2) and is ad mitted by the port2 to the port 0. In this position of the valve '0 the port 5 is inregister with the long narrow port 5 of the blast nozzle supply pipe u,so that steam as may be required merely for keeping up steam when alocomotive is standing at a station, or is drifting. At this time, theblast nozzle or blower is receiving steam through the ports 5 5 and airfor supporting combustion is admitted in limited quantity by the louvresj which have been turned to a slightly open position by the mechanism isZ m n 0 p. If the control handle r be turned further in the samedirection, the end wall .2 will be moved farther from the steamadmission port, a wider portion of the port 2 will register with theport of pipe 6 and the port 3 will come gradually into register with theport of the pipe 6'. The burner 0 will now deliver a larger flame andthe burner 0 will also deliver a flame of gradually increasing size.During further turning of the valve 4), the port 4 will gradually comeinto register with the port of the pipe 6 as will be apparent, so thatall three burners will be brought into operation. After the initialportion of this progressive control of the burners, the port 5 movespast the port 5 of the blast nozzle supply pipe at, and during theprogressive control of the steam and fuel admission to the burners theair admission devices 7' are controlled in a corresponding manner.

The foregoing is a description of a graduated control of the burners insequence, but it may be desired to exercise a graduate-d control of theburners in simultaneous operation. For this purpose, and as illustratedby Figures 3 to 6 an auxiliary control valve casing 6 may be provided onthe valve casing g. The steam supply pipes e e e are connected with theauxiliary casing 6 in which is a revoluble plug valve? capable of beingturned to either one of two positions by means of a handle 8, see Figure1, 'on its spindle. Between the casings g and 6 are three port openings9, 10 and 11 in horizontal or axial alignment and two other ports 12 and13 so disposed that a line drawn through the centres of the ports 9, 12,and 13 is parallel with a line connecting the leading ends of the ports2, 3 and 4. The port 13 communicates with the auxiliary valve casing 6by means of an inclined passage 13 and the port 12 communicates withsuch casing by a bent passage 12*. The plug 7 is formed with an annulargroove 14 opposite the ports a and 9, with a through port 15 which canbe brought into register with ports a and 10, or ports a and 12, andwith a through poit 16 which can be brought into register with ports 6and 11 or ports a and 13. For the above described graduated control insequence, the plug 7 w'ould be turned to the position in which thethrough ports 15 and 16 connect the ports e' and respectively with theports and 11. For simultaneous graduated control, the plug 7 is turnedto the position seen in Figures 5 and 6 in which the ports and 16connect the ports 0 e respectively with the ports 12 and 13. In thisposition of the plug 7, the simultaneous registering of the ports 2, 3and 4 with the ports 9, 12 and 13 during the turning of the. valve 41will result in the simultaneous admission of steam to the pipes e e ande. The fuel valve casing f is similarly fitted with an auxiliary valvecasing containing a S1II11- larlv formed valve. and the spindle 8 of thevalve 7 is extended at 8 parallel with the shaft 9 and forms the spindleof a similar plug valve in the fuel valve casing. Consequently, byturning the handle 8 to one position or the other, both the steam andfuel valves will be controlled for either sequential or simultaneousgraduated regulation of the burners as will be readily understood.

According to a modification illustrated in Figure 7, the valve 4) may beformed with two sets of ports, one set like that in Figure 2, comprisingports 2, 3 and 4 having their narrow ends on a line oblique to the axisof the valve, and the other set comprising ports 20, and having theirnarrow ends on a line parallel with the axis. In turning the valve o inone direction, the narrow ends of the ports 2, 3 and 4 will be theleadingends and will come into register with the ports a e e in sequenceas before. In turning the valve '0 in the opposite direction, the narrowends of the ports 20, 30, and 40 will be their leading ends and willcome into register with the ports 6 e 6 simultaneously. Instead of theworm 'v and nut w used in Figure 2 for endwise movement of the valve 4),a fixed pin 17 engaging in a cam slot 18 in a part 19 on the valvespindle is employed. In turning the valve 4; in either direction fromthe shut-oft position seen in Figure 7, the pin 17 and cam slot 18- willcause an endwise movement of the valve v away from the porth. The steamports for the blower must be duplicated as at 21, 21 and joined by abreeches connection, not shown, with the pipe it and the valve 0 must beformed with two ports 50, 50, one of which will register with one port21 during clockwise turning and the other of which will register withthe other port 21 during anti-clockwise turning, as will be readilyunderstood. In order to operate the rod m and adjust the louvres j, forcontrolling the air admission in either direction of turning of thevalve '0, it would be a simple matter to arrange for example, for thecrank n to be on dead centre when the valve '0 is in the closed orneutral position, so that such crank would operate the rod m in eitherdirection of turning. .i

Instead of a. cylindrical valve, a disc valve may be employed asillustrated in Figures 8 and 9. In this construction the front coverdisc 26 has ports 22, 23, 24, adapted to be placed in communication withthe pipes e e 6 and a port 25 adapted to be placed in connection withthe steam blower suppl pipe to. The rear disc 27 is revolub e and has acentral steam connection 28 for admitting steam to radial passages 29and 31. Three tapering arcuate passages 32, 33, 34, extend from thepassage 29 and other three arcuate passages 35, 36, 37, extend from theradial passage 31. The narrow ends of the passages 32, 33, 34, are atdifferent distances from the ports 22, 23 and 24 respectively whenthevalve is in the neutral position seen in Figure 8, whereas the narrowends of the passages 35, 36, 37 are at one and the same distance fromsuch ports. Consequently, clockwise turning of the disc 27 by its handle38 will bring the passages 32, 33 and 34 into register with the ports22, 23 and 24 in sequence as indicated by the indicating figures 1 2 3seen on the front cover disc 26, whereas anti-clockwise turning willbring the passages 35, 36, 37 simultaneously into register with theports 22, 23, 24, as may be indicated by the figure 1 on the disc 26.From the passages 29,31 there extend passages 39 for registering withthe elongated port 25 of the pipe at in either direction of turning ofthe disc 27. A cam device comprisinga gradual slope 41 and a steep slope42 may be fixed on the disc 27, the gradual slope 41 engaging with arocking lever 43 during clockwise turning and the steep slope 42engaging with a rocking lever 44 during anti-clockwise turning. Thelevers 43, 44, by suitableconnections 45, 46 with a bell crank 47, maybe caused to operate the louvres or dampers j, Figure'l, in accordancewith the contour of the cams as will be readily understood. A suitableconnection would be provided, of course, between the valve seen inFigures 8 and 9 and a correspondingly constructed fuel valve, as will bereadily understood.

The invention is not limited to the herein described constructions, asit is possible to devise many modifications and changes withoutdeparting from the spirit and es sentials of the invention as defined inthe claims.

I claim v l.'In control mechanism for a furnace opening a supply byaxial movement and for graduated admission from such supply to theburner by revolution, a common control mechanism for said valves and a1rcontrol means operatively connected with said mechanism substantially asset forth.

2. In control mechanism for a furnace comprising a burner of aprojectable fuel, the combination with a unified air, fuel and steamcontrol of cylindrical fuel and steam valves comprising a screw deviceoperative during the initial turning of such valves to effect an axialmovement of the valves for uncovering a supply said valves duringfurther turnlng being adapted for giving a graduated opening of portsbetween said supply and the burner, and air control means operativelyconnected with said unified control substantially as set forth.

3. In control mechanism for a furnace comprising a burner of aprojectable fuel, the combination with a unified air fuel and steamcontrol, of hollow cylindrical fuel and steam valves having one endadapted for operating as a valve face to seat against a fluid supply,ports admitting fluid to the interior of the hollow cylinders when saidface leaves its seat, a peripheral port adapted for giving graduatedadmission from the valve casing to the burner and screw means connectedwith said valves for moving them endwise during revolution substantiallyas set forth.

4. In control mechanism for a furnace comprising a burner of aprojectable fuel, the combination of a fuel valve adapted by a turningmotion to produce opening of supply and then graduated admlsslon to theburner, a steam valve similarly adapted, a common control mechanism forsaid fuel and steam valves, air dampers, damper control mechanism inoperative connection with said common control mechanism, a steam blastdevice and means in connection with said steam valve for supplying saidblast device with steam during a predetermined phase of the controlsubstantially as set forth.

5. In control mechanism for a furnace comprising a plurality of burners,the combination of co-ordinated fuel and steam valves, said valves beingadapted for producing a graduated admission of fuel and steam to theseveral burners, a common control for said valves, an air admissiondamper device operatively connected with said common control, and asteam blast control valve associated with said steam valve,substantially as set forth.

6. In control mechanism for a furnace comprising a plurality of burners,the combination of co-ordinated fuel and steam valves adapted for twodifferent phases of control one phase being that of graduatedsimultaneous admission of fuel and-steam to all of the burners and theother phase being that of graduated admission of fuel and steam to thedifferent burners in sequence, a common control for said valves and anair admission damper device operatively connected with said commoncontrol, substantially as set forth.

7. In control mechanism for a furnace comprising a plurality of burnersin which liquid fuel is atomized and projected by steam, the combinationof a steam ,valve arrangement adapted? for giving graduated control ofadmission to the several burners simultaneously or in sequence asdesired, a fuel valve, a common control for said valve, an air admissiondamper device operatively connected with said common control, and ablast control valve associated with said steam valve substantially asset forth.

8. In control mechanism for a furnace comprising a plurality of burnersin which liquid fuel is atomized and projected by steam, the combinationof a hollow cylindrical steam valve, a reduced end on said valve saidreduced end being adapted for acting as a screw-down valve face andhaving ports for admission of steam to the interior of said valve afterthe lifting of said face from its seat, the cylindrical wall of saidvalve being formed with a plurality of tapering ports having theirleading ends aligned at an angle to the longitudinal axis of the valveand adapted for registering with ports in the casing of said valve, afuel valve, a common control for said valves and an air admission damperdevice operatively connected with said common control substan tially asset forth.

9. In a unified selective control for a liquid fuel furnace comprising aplurality of burners, the combination of a rotary steam valve, a rotaryfuel valve, a common hand gear operatively connected with said valves, aplurality of pipe connections between the casings of said valves andsaid burners, said steam valve comprising port arrangements adapted inone phase of. working for giving a graduated simultaneous admission tosaid burners and in another phase of working for giving a graduatedadmission to said burners in sequence, a furnace air damper deviceoperatively connected with said hand control, and a steam blast controlvalve associated with said steam valve, substantially, as set forth.

10. In a unified selective control for a liquid fuel furnace comprisinga plurality of burners, thefcombination of a rotary steam 1 valve f''arrangement adjustable for graduated admission to the several burnerseither simultaneously or in sequence as desired, a rotary fuel valveadjustable for graduated admission to said burners in accordance withsaid steam. valve, a common hand gear operative upon said Valves, firebox dampers operatively connected with said hand gear, and a steam blastconnection with said steam valve, said connection being supplied withsteam through a ort arrangement which opens during the graduatedadmission to the burners Whether simultaneously or in sequencesubstantially as set fcrth.

NORMAN HUSON MORRIS.

